Jesus began his ministry with the words "Repent, for the kingdom of heaven is at hand." Why do you suppose he said this?
He also said, “I was not sent but unto the lost sheep of the house of Israel”. Why do you suppose He said this?
Also, Peter says in 2 Peter 3:9 that the Lord is longsuffering and patient, not willing that any should perish, but that all should come to repentance. If repentance does not precede salvation, then what is God "longsuffering" for?
Also, Peter was apostle to the circumcision, his audience was Jewish. Peter preached to those on whom the end of the age with great wrath was coming. There was a very serious time line involved for every Jew of
'that generation' alive on the planet. The urgency of the message to 'the Jew first' was
'Save yourselves from this crooked generation' (Acts 2), and
'Every soul that shall not hearken to that prophet, shall be utterly destroyed from among the people' (Acts 3).
9 The Lord is not slack concerning his promise, as some count slackness; but is
longsuffering to you-ward, not wishing that any should perish,
but that all should come to repentance. 2 Pet 3
“You-ward” is Jews, Peter’s audience. And God did not wish for any of His sheep to be caught up in the wrath and destruction about to be poured out upon ‘that generation’. Consider what was coming upon 'that generation':
upon you may come all the righteous blood shed on the earth, from the blood of Abel the righteous unto the blood of Zachariah son of Barachiah, whom ye slew between the sanctuary and the altar. Verily I say unto you,
All these things shall come upon this generation. Mt 23:35,36
(compare with: And
in her was found the blood of prophets and of saints, and of all that have been slain upon the earth. Rev 18:24 )
23 Woe unto them that are with child and to them that give suck in those days! for there shall be
great distress upon the land, and
wrath unto this people.
32 Verily I say unto you,
This generation shall not pass away, till all things be accomplished. Lk 21
God made sure that every Jew on earth was given the chance to 'hearken to that prophet' before the wrath came. All the Jews of that generation on earth heard the gospel, and were given the chance to repent and escape the wrath that was to come upon 'that generation', and for their progeny to avoid the curses of the OT [Lev 26; Dt 28 & 31,32] that were to come upon the race. God gave her time to repent (a full forty year generation), but she would not. Only a remnant was saved.
Luke 13:3 & 5 Lest you repent you shall likewise parish. Read it however you want to, I repented!
Again, this is addressed to ‘that generation’ on whom the end of the age was coming.
1 Now there were some present at that very season who told him of the Galilaeans,
whose blood Pilate had mingled with their sacrifices.
3 I tell you, Nay: but, except ye repent, ye shall all
in like manner perish.
What do you imagine Pilate did there? You know he didn't 'mingle their blood' himself , he sent soldiers to do the deed. 'In like manner' they were all to die in the wrath to come if they did not repent.
4 Or those eighteen, upon whom
the tower in Siloam fell, and killed them, think ye that they were offenders above all the men that dwell in Jerusalem?
5 I tell you, Nay: but, except ye repent, ye shall all
likewise perish.
Josephus actually records this event that happened in the 'berg' of Siloam. Roman soldiers, again by Pilate's orders, disguised themselves and mingled with the crowd and fell upon them with clubs and beat them to death to quell an uprising of the Galileans over Pilate misappropriating temple funds to extend an aqueduct from the spring at Siloam. They were all to 'likewise' perish in the wrath to come upon that generation if they did not repent.